From: Tyler Retzlaff <roretzla@linux.microsoft.com>
To: dev@dpdk.org
Cc: "Morten Brørup" <mb@smartsharesystems.com>,
"Akhil Goyal" <gakhil@marvell.com>,
"Aman Singh" <aman.deep.singh@intel.com>,
"Anatoly Burakov" <anatoly.burakov@intel.com>,
"Andrew Rybchenko" <andrew.rybchenko@oktetlabs.ru>,
"Bruce Richardson" <bruce.richardson@intel.com>,
"Chengwen Feng" <fengchengwen@huawei.com>,
"Dariusz Sosnowski" <dsosnowski@nvidia.com>,
"Dmitry Kozlyuk" <dmitry.kozliuk@gmail.com>,
"Fan Zhang" <fanzhang.oss@gmail.com>,
"Ferruh Yigit" <ferruh.yigit@amd.com>,
"Harman Kalra" <hkalra@marvell.com>,
"Harry van Haaren" <harry.van.haaren@intel.com>,
"Honnappa Nagarahalli" <honnappa.nagarahalli@arm.com>,
"Jiayu Hu" <hujiayu.hu@foxmail.com>,
"Jingjing Wu" <jingjing.wu@intel.com>,
"Kevin Laatz" <kevin.laatz@intel.com>,
"Konstantin Ananyev" <konstantin.v.ananyev@yandex.ru>,
"Matan Azrad" <matan@nvidia.com>, "Ori Kam" <orika@nvidia.com>,
"Pallavi Kadam" <pallavi.kadam@intel.com>,
"Reshma Pattan" <reshma.pattan@intel.com>,
"Sameh Gobriel" <sameh.gobriel@intel.com>,
"Suanming Mou" <suanmingm@nvidia.com>,
"Thomas Monjalon" <thomas@monjalon.net>,
"Tyler Retzlaff" <roretzla@linux.microsoft.com>,
"Viacheslav Ovsiienko" <viacheslavo@nvidia.com>,
"Vladimir Medvedkin" <vladimir.medvedkin@intel.com>,
"Volodymyr Fialko" <vfialko@marvell.com>,
"Yipeng Wang" <yipeng1.wang@intel.com>,
"Konstantin Ananyev" <konstantin.ananyev@huawei.com>
Subject: [PATCH v2 06/19] hash/thash: remove use of VLAs for Windows built code
Date: Thu, 18 Apr 2024 13:02:29 -0700 [thread overview]
Message-ID: <1713470562-17415-7-git-send-email-roretzla@linux.microsoft.com> (raw)
In-Reply-To: <1713470562-17415-1-git-send-email-roretzla@linux.microsoft.com>
From: Konstantin Ananyev <konstantin.ananyev@huawei.com>
1) ./lib/hash/rte_thash.c:774:9
: warning: ISO C90 forbids variable length array ‘tmp_tuple’ [-Wvla]
From my understanding, tuple size here should never exceed
sizeof(union rte_thash_tuple), so it should be safe to replace VLA with
fixed size array.
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@huawei.com>
---
lib/hash/rte_thash.c | 2 +-
lib/hash/rte_thash.h | 8 ++++++++
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/lib/hash/rte_thash.c b/lib/hash/rte_thash.c
index 68f653f..e28d423 100644
--- a/lib/hash/rte_thash.c
+++ b/lib/hash/rte_thash.c
@@ -771,7 +771,7 @@ struct rte_thash_subtuple_helper *
uint32_t desired_value, unsigned int attempts,
rte_thash_check_tuple_t fn, void *userdata)
{
- uint32_t tmp_tuple[tuple_len / sizeof(uint32_t)];
+ uint32_t tmp_tuple[RTE_THASH_MAX_L4_LEN];
unsigned int i, j, ret = 0;
uint32_t hash, adj_bits;
const uint8_t *hash_key;
diff --git a/lib/hash/rte_thash.h b/lib/hash/rte_thash.h
index 30b657e..322fe3a 100644
--- a/lib/hash/rte_thash.h
+++ b/lib/hash/rte_thash.h
@@ -109,6 +109,14 @@ union __rte_aligned(XMM_SIZE) rte_thash_tuple {
};
/**
+ * maximum length in dwords of input tuple to
+ * calculate hash of ipv(4|6) header +
+ * transport header
+ */
+#define RTE_THASH_MAX_L4_LEN \
+ ((sizeof(union rte_thash_tuple)) / sizeof(uint32_t))
+
+/**
* Prepare special converted key to use with rte_softrss_be()
* @param orig
* pointer to original RSS key
--
1.8.3.1
next prev parent reply other threads:[~2024-04-18 20:03 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-17 23:41 [PATCH 00/16] " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 01/16] eal: include header required for alloca Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 02/16] hash: remove use of VLAs for Windows built code Tyler Retzlaff
2024-04-18 6:45 ` Morten Brørup
2024-04-17 23:41 ` [PATCH 03/16] ethdev: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 04/16] gro: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 05/16] latencystats: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 06/16] lpm: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 07/16] rcu: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 08/16] app/testpmd: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 09/16] test: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 10/16] common/idpf: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 11/16] net/i40e: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 12/16] net/ice: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 13/16] net/ixgbe: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 14/16] common/mlx5: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 15/16] net/mlx5: " Tyler Retzlaff
2024-04-17 23:41 ` [PATCH 16/16] build: enable vla warnings on " Tyler Retzlaff
2024-04-18 6:48 ` Morten Brørup
2024-04-18 15:12 ` Tyler Retzlaff
2024-04-18 15:23 ` Bruce Richardson
2024-04-18 19:22 ` Morten Brørup
2024-04-18 6:49 ` [PATCH 00/16] remove use of VLAs for " Morten Brørup
2024-04-18 12:11 ` Konstantin Ananyev
2024-04-18 15:15 ` Tyler Retzlaff
2024-04-18 15:35 ` Konstantin Ananyev
2024-04-18 20:02 ` [PATCH v2 00/19] remove use of VLAs for Windows Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 01/19] eal: include header required for alloca Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 02/19] eal/linux: remove use of VLAs Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 03/19] eal/common: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 04/19] ethdev: remove use of VLAs for Windows built code Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 05/19] hash: " Tyler Retzlaff
2024-04-18 20:02 ` Tyler Retzlaff [this message]
2024-04-18 20:02 ` [PATCH v2 07/19] rcu: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 08/19] gro: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 09/19] latencystats: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 10/19] lpm: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 11/19] app/testpmd: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 12/19] test: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 13/19] common/idpf: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 14/19] net/i40e: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 15/19] net/ice: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 16/19] net/ixgbe: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 17/19] common/mlx5: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 18/19] net/mlx5: " Tyler Retzlaff
2024-04-18 20:02 ` [PATCH v2 19/19] build: enable vla warnings on " Tyler Retzlaff
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